The problem with artificial intelligence is that the machine cannot feel. The machine cannot put into pictures what it does not know and can therefore never really understand. Emotion and creativity are things that the machine lacks.
This is where human intelligence comes in. The computer's skills can be enhanced by humans to create a more natural sounding story. So we get the best of both worlds: human creativity paired with artificial intelligence as an assistant to enhance its abilities and provide assistance when needed.
Both the video and the sound are a collaboration of artificial and human intelligence by Gerhard Hoeberth.